Buckle



FIG. 1 is a perspective view of a buckle showing the new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a side view thereof, the opposite side being the same as this side.

The broken line portions of the disclosure are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a buckle, as shown and described. 